x86/iommu: Use NULL instead of plain 0 for __IOMMU_INIT
IOMMU_INIT_POST and IOMMU_INIT_POST_FINISH pass the plain value 0 instead of NULL to __IOMMU_INIT. Fix this and make sparse happy by doing so. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Joerg Roedel <joerg.roedel@amd.com> Link: http://lkml.kernel.org/r/1346621506-30857-8-git-send-email-minipli@googlemail.comSigned-off-by: Ingo Molnar <mingo@kernel.org>
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